Tube frame for axminster looms



3 1 7 o0 A. 5 l

S M O O L R4 :BHW .N51 mAm. LMS SM2 4c. we RFD CEd .l GMF E B U T Aug. 4, 1925.

www

Patented Aug. 4, 1925.

UNITED STATES PATENT ortica.

GEORGE CROSSLAND, 0F AMSTERDAM, NEW YORK, ASSIGNOR TO MOHAWK CARPET MILLS, INC., O-F AMSTERDAM, NEW YORK, A CORPORATION OF NEW YORK.

TUBE FRAME FOR AXMINSTER LOOM-S.

Application led December 26, 1924. Serial No. 758,282.

To all who/in t may concern:

Be it known that l, GEORGE CRossLAND, a citizen of the United States, and residing at Amsterdam,` county of Montgomery, State of New York, have invented certain new and useful Improvements in Tube Frames for AXminster Looms, of which the following is a specification.

This inventio-n relates to looms for weaving tufted fabrics, such as, for example, AXminster rugs, and relates more particularly to an improved construction of the tube frames for supporting the spools of tuft yarn.

In the operation of such looms, the tube frames are carried upon an endless chain` to which they are detachably secured by spring hooks or clamps. These tube frai'nes are removed from the chain in regular sequence by clutch or transfer members which press upon the spring hooks and ythereby release the frames from the chain. A portion of the yarn carried by the spool held in the frame is woven into the fabric, and the frame is then automatically replaced upon the chain. It will be seen that it is extremely important that these spring hooks be reliable in operation, and not subject to breakage. The tube frames are also usually provided with a spring brake or tension finger adapted to prevent the yarn carrying spool from rotating too freely.

This invention has for its object to provide a tube frame having an improved construction of such spring hooks or clamps and spring tension fingers.

It is an object of this invention to provide a spring hook which has a greater length than the ordinary spring hook now in use, and hence a greater flexibility when made of a given material, and which will therefore allow the use of a heavier and stronger material than is usual without lo-ss of flexibility.v i

It is a further object of my invention to provide a spring hook which is completely enclosed andV protected from breaking in tuences except at the'point where it is essential that it be exposed to the action of the clutch members.

Another object of my invention is to provide an improved spring tension brake for the spool, which is capable of easy and posi-A tive adjustment, as required, thereby securing uniform and permanent retarding action.

Other objects and advantages of my invention will be apparent from the following description, taken in conjunction with the accompanying drawings, which form a part of this specification, and in which- Figure 1 is a side elevation of one end of a tube frame, showing my invention applied thereto;

Figure 2 is an enlarged end elevation of the same;

Figure 3 is a central longitudinal section of a. portion of Figure l, drawn to the same scale as Figure 2; and

Figure 4 is a detail cross-sectional view, taken on the line 4 4 of Figure 1.

Referring more particularly to the drawings, in which like reference characters denote like parts throughout the several views thereof, 10 represents the body or bar of the tube frame, ordinarily constructed of wood, to which are attached the tubes 11. To the upper side of the member 10 at an end thereof is secured a right angle bracket 12, whose upper end is provided with an open-ended slot 13, which serves as a bearing for the axial shaft end 15 of the yarn spool 14.. The shaft 15 is prevented from falling out by a fiat, hook-shaped, spring member 16, which is pivoted on the rivet 17, and closes the upper end of the slot.

An ear or bracket 18 is fastened to the under side of the end of the member 10 by a screw 19, and forms a part of the clamp by which the tube frame is supported on the chain, as above described. The ear 18 is offset at its upper end, as shown, to form one member of the chain engaging clamp.

A spring hook 20 isA fastened in a groove A cut in the underside of the bar 10 near the end thereof, and is held in place by means of the ear 18 and the screw 19. The spring hook 20 is preferably made of flat spring steel, and comprises a base portion, which is secured to the bar 10, an arcuate portion bent upwardly in a gradual curve of relatively large radius, and a straight main portion arranged at an obtuse angle to the base portion. The free upper end of the main portion is bent over to form a hook 21, which cooperates with t-he offset portion of ear 18 and is adapted to engage the carrying chain.

through a long slot- 23 in the ear 18 in such a manner that both of its ends are pro-Y tected from breaking influences, and only that portion of the spring is exposed which must be gripped by the clutch arms. The bracket 12 andthe ear 18 may, if desired,

be joined together by spot welding or otherwise to form a single unitary structure which may be mount-ed in place at the same time as the Yspring hook 2O by slipping the entire assembly endwise on the bar l0. The spring 2O will thus enter the groove provided for it, and the retaining screws may then be inserted. The outer faces'of the bracketl12 and ear 18are preferably mounted flush with the bar l0, as shown.

The other end of the tube frame, not shown in the drawings, is of substantially similar construction, except that the bracket corresponding to bracket 12 is formed with a hole instead of a slot, andthe slot 13, catch 16, and rivet 17 are eliminated, as is usual in such constructions.

It is customary to provide one end of the tube frame with a spring brake to check the rotation of the yarn spool. My spring brake is of a new and improved form, which may be easily and positively adjusted to secure a uniform retarding action. It comprises a long tension spring 24, which carries at its free end a friction pad 25, preferably of leather, bearing upon the head 26 of the yarn spool 14. A shorter sub-tension spring 27 is mounted under the tension spring 2li, and both springs arey fastened to the bar 10 by screws 28 remote from said head. A headless adjust-ing screw 29 is preferably tapped into both the wooden bar 10 and a nut 30 embedded in the bar, and

-bears against the sub-tension spring 27. The

screw 29 is of such length as not to project below the bar l0, and its lower end is provided with a slot, as shown, to receive a screw driver. j ByV adjustment of the screw 29, the friction on the spool 14 maybe easily and permanently regulated.

Various modificationsV and alterations may `be made in my invention without aifecting the spirit thereof, and I desire to be limited, therefore, only by the prior art and the scope of the appended claims.

Having thus described my invention, what is claimed as new and desired to bei secured by United States Letters Patent is:

1. In a tube frame, in combination, a bar havingl tubes secured thereto, an ear having a slot therein secured to the under side of said bar, and a spring hook having a base portion fastened between the under side of said bar and said ear and a main portion ex tendingupwardly thru said slot in said ear.

2. The combination as specified in claim l, in which said base portion of said spring hook is arranged at an obtuse angle to said upwardly extending main portion, and the intermediate portion is in the form of a gradual curve.

3, In a tube frame, in combination, a bar having tubes secured thereto, a right an le bracket having one arm secured to the un( er side of said bar at one end thereof and the other arm extending upwardly therefrom, the upwardly extending Varm having an offset portion adapted to form one element of a clamp, an elongated slot in said upwardly extending arm and said offset portion, and a spring hook adapted to form the other element of said clamp passing through said slot and secured at its lower end between the under side of said bar and said bracket, whereby a relatively long spring is secured which is protected substantially completely from breaking influences.

4. In a tube frame, in combination, a bar having tubes secured thereto, an ear having a slot therein secured to the under side of said bar, a groove formed in said bar Vadjacent said ear, and a spring hook fastened in said groove between said ear and said bar and extending upwardly thru said Slot in said ear, said spring being bent upwardly in a gradual curve.

5. The combination as specified in claim a, in which theend of said bar Wit-hin said ear is roundedV off to provide an enclosed space for the arcuate portion of said spring.

6. In a tube frame, vin combination, a bar having tubes secured thereto, a tuft yarn spool supported on said bar, an elongated flat steel spring secured at one end to the upper face of said bar and having its other endbearing on said spool, and an adjusting screw passing thru said bar at right angles to, and bearing upon, said spring.

7. In a tube frame, in combination, a bar having tubes secured thereto, a tuftyarn spool supported on said bar, an elongated flat steel spring secured at oneend to the upper face of said ,bar and havingits other end bearing on said spool, a second `fiatspring arranged beneath part of said first spring, a nut embedded in said bar beneath Vsaid springs, andan adjusting screw passing .spring at right angles thereto,`said adjusting screw being entirely within said bar. j

8. As an article of manufacture, a spring hook for use with tube frames, comprising a base portion, an arcuate portion bent upwardly in a gradual curve, the length of said arcuate portion being approximately one-quarter of the total length of the spring, a straight main portion arranged at an obtuse angle to said base portion, and a hook formed on the free end of said spring.

9. As an article of manufacture, a spring hook for use with tube frames, comprising a base portion, an arcuate portion bent upwardly in a gradual curve of large radius, the length of said arcuate portion being,

more than one-sixth of the total length of 10 the spring, a straight main portion arranged at an obtuse angle to said base portion, and a hook formed on the free end of said spring.

In testimony whereof I hereunto aflix my 15 signature.

GEORGE @Ros-SLAND. 

